Carolina Kostner - Has been around for 4 Olympic cycles now as Italy's top singles skater. There is such a huge difference between early Kostner and later/current Kostner. In 2003, she did 2 triple-triple combos and had all the speed in the world. In 2006, she placed 9th at a home Olympics and in 2010 she was 16th (her LP was an epic meltdown

). For me, she came into her own in 2012 and her LP that year was the first program of hers that I found truly memorable. She did less technical difficulty than in her early days but showed much greater control and attention to detail. From 2012 onward, she has shown calm elegance, two words I would not have used for her earlier in her career. Her 2014 Olympic medal was well-deserved and I was so happy for her. She rediscovered her joy in skating after 2010 and started skating for herself. What an incredible journey, and it's still going! I thought Sochi would be it but, suspension notwithstanding, she came back to competition! I wasn't a huge fan of her 2016/2017 programs, but at this point, she's Carolina and she's amazing and I'm glad she's back.
Skaters representing countries with little or no figure skating history - Tugba Karademir, Elene Gedevanishvili, Michael Christian Martinez, and Deniss Vasiljevs come to mind. Yuna Kim was also in this category. Karademir's goal at the Olympics was simply to qualify for the LP. Not everyone who competes expects to get a medal.
Marina Zoueva - Extremely instrumental in the rise of U.S. Ice Dance. Coached B&A and D&W and V&M and still coaches the Shibs. Coached both the gold and silver medalists at the last two Olympics. She now coaches/helps with singles skaters Nathan Chen and Patrick Chan. I never expected she would coach singles skaters, but she is.
V&M and D&W - Rivals who trained together for a long time and fought each other for gold. Both teams had skated together since childhood. Both won OGM and OSM, swapping places in 2010 and 2014. V&M made a comeback and won everything last season. They definitely still have that hunger for gold.
P&C - After being 13th at Worlds in 2014, they won the title in 2015. Has any other team made that big of a jump in the Worlds standings from one year to the next? Their FD was absolutely stunning that year. I thought, "I've never paid attention to them before, but they won and it was beautiful!"
French Ice Dance always brings interesting things to the table. I'll never forget A&P or P&B either.